How Much Does a Granny Flat Cost in Brisbane? 2026 Guide
- May 6
- 5 min read
Adding a granny flat to your Brisbane property is one of the smartest moves homeowners can make right now. With rental vacancy rates remaining tight, housing demand surging ahead of the 2032 Brisbane Olympics, and "granny flat" ranking among the most searched property terms in Brisbane, more Queensland homeowners are exploring the benefits of building a secondary dwelling.
But the first question is usually the same:
How much does a granny flat cost?
The honest answer is that it depends on several factors, including the size of the design, the number of bedrooms, whether you include a garage, and what site preparation your block requires. This guide breaks down the key costs so you can budget with confidence.
The Short Answer: What Does a Granny Flat Cost in Brisbane?
With Dixon Homes, granny flat prices in South East Queensland start from $130,900 for a compact 1-bedroom design and go up to around $225,000 for a larger 2-bedroom home with a garage.
The most popular option, a well-appointed 2-bedroom granny flat, typically falls between $163,800 and $195,100.
Granny Flat Cost by Size and Bedroom Count
To give you a clearer idea of pricing, here is how selected Dixon Homes Brisbane granny flat designs compare:
Design | Bedrooms | Size | Fixed Price From: |
GR2228 | 1 bed / 1 bath | 26.6 m² | $130,900 |
GR2268 | 1 bed / 1 bath | 41.8 m² | $149,000 |
GR2286 | 2 bed / 1 bath | 60 m² | $169,000 |
GR2302 | 2 bed / 1 bath | 64.9 m² | $171,800 |
GR2300 | 1 bed / 1 bath | 74 m² | $177,700 |
GR4701 | 2 bed / 1 bath | 83.9 m² | $195,100 |
GR8904 | 3 bed / 1 bath | 97.1 m² | $195,600 |
GR8901 | 3 bed / 2 bath | 96.9 m² | $217,200 |
These prices are based on selected Dixon Homes granny flat designs and do not include every possible site-specific cost. Your final project price may vary depending on your property, approvals, service connections, site preparation and selected inclusions.
For most Brisbane homeowners, the sweet spot is a 60-75 m² two-bedroom design. This size range offers a strong balance of rental income potential, practical liveability, build cost and council compliance. Many South East Queensland councils cap secondary dwellings at 80 m², so choosing a design within this range can help keep the process more straightforward.
What's Included in a Dixon Homes Fixed Price?
A Dixon Homes granny flat price includes the full construction of the dwelling including:
steel frame and truss
roofing
external cladding
windows
doors
kitchen
bathroom
flooring
painting
electrical and plumbing fit out
A 5-kW solar system is also a standard inclusion on applicable builds, and all homes come with a 50-year structural warranty.
There are some costs that are typically not included in the base price. These may include:
Land
You already own the block, so land is not included in the granny flat price.
Site preparation
Clearing, levelling, and connecting to existing utilities can add approximately $15,000-$25,000 depending on your site's condition.
Town planning and approvals
In many cases, Brisbane secondary dwellings that meet the relevant size and planning requirements do not need a development application. However, you will still need building approval from a licensed certifier.
What Can Increase the Cost of a Granny Flat?
Beyond the base build price, several factors can affect the final cost of your granny flat.
Garage Inclusions
Several Dixon Homes designs include a single or double garage. Adding a garage can typically add $25,000–$50,000 to the overall cost, but it can also increase rental appeal and long-term resale value significantly.
Garages are typically not counted as part of the maximum secondary dwelling floor area, but this should always be confirmed based on your council requirements and chosen design.
Site Conditions
If your block has a slope, poor soil conditions, or limited construction access, site preparation costs will be higher.
A Dixon Homes site assessment, available from $250, helps identify these factors before you commit.
Larger Designs
Designs above 80 m² may require a development application in some Brisbane and South East Queensland council areas. This can add extra time, consultant fees and approval costs.
For this reason, many homeowners choose a compliant design under 80 m² to simplify the approval pathway.
Finishes and Upgrades
Optional upgrades can also affect the final price. These may include features such as Hamptons-style facades, tiled decks, outdoor entertaining areas and other design selections that help your granny flat complement the character of your existing home.
How Does Dixon Homes Pricing Compare to the Market?
Dixon Homes' granny flat pricing is competitive within the Queensland market.
Independent builders and modular granny flat companies typically quote between $150,000 to $300,000 for comparable builds. However, these quotes may not always include the same level of fixed-price certainty, structural warranty, documentation or quality assurance that comes with a Dixon Homes build.
With Dixon Homes, you also benefit from a builder with ISO 9001 quality certification and decades of experience building homes across Queensland and New South Wales.
Is a Granny Flat Worth the Investment?
In many cases, yes, especially in Brisbane’s current rental market.
A 2-bedroom Dixon Homes granny flat in Brisbane’s middle-ring suburbs can generate approximately $300–$400 per week in rental income. That equates to around $15,600–$20,800 per year in gross rental income.
On a $170,000 build, that represents a gross return of 9–12% on the build cost alone, making granny flats one of the strongest potential yield opportunities in residential property.
We will cover the full investment case in more detail in our upcoming guide to granny flat rental income in Brisbane.
Ready to Get a Granny Flat Price for Your Block?
Dixon Homes has 49 granny flat designs available for South East Queensland, starting from $130,900 with a fixed price guarantee.
Book an appointment with a Dixon Homes consultant to organise a site assessment and find the right granny flat design for your block.
ALL PRICING IS BASED ON BRISBANE AREA RATES FOR FACADES IN THE DIXON HOMES OPTIONAL FACADES BOOKLET. PRICING IS SUBJECT TO CHANGE WITHOUT NOTICE E&OE 31.10.13 | www.dixonhomes.com
Exclusions unless otherwise specified: the construction contract does not provide for the following and/or similar items and/or their installation and/or any additional works to facilitate installation: Window furnishings; decorative light fittings; letter box; retaining walls; landscaping; fencing; driveways and paths; floor coverings; paving; fireplaces; soft furnishings; vehicles; any siteworks other than specifically stated in site estimate; any items not specified on inclusion lists and/or colour selections and/or plans, and not specifically costed in by the builder.
Dixon Homes and its employees do not provide, and are not qualified to provide, any financial, legal or taxation advice, and accepts no responsibility or liability for any financial decisions made by the client. Clients should obtain independent advice from their own solicitor, accountant, financial planner or other licensed professional, having regard to their personal circumstances, before entering into any contract or making any related financial commitment.
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